smart shoes charger tan chee chian this report is...
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SMART SHOES CHARGER
TAN CHEE CHIAN
This report is submitted in partial fulfillment of the requirements for the award of
Bachelor of Electronic (Industrial Electronics) With Honours
Faculty of Electronic and Computer Engineering
University Teknikal Malaysia Melaka
April 2011
UNIVERSTI TEKNIKAL MALAYSIA MELAKA
FAKULTI KEJURUTERAAN ELEKTRONIK DAN KEJURUTERAAN KOMPUTER
BORANG PENGESAHAN STATUS LAPORAN
PROJEK SARJANA MUDA II
Tajuk Projek : Smart Shoes Charger
Sesi Pengajian : 1 0 / 1 1
Saya TAN CHEE CHIAN
mengaku membenarkan Laporan Projek Sarjana Muda ini disimpan di Perpustakaan dengan syarat-syarat kegunaan seperti berikut:
1. Laporan adalah hakmilik Universiti Teknikal Malaysia Melaka.
2. Perpustakaan dibenarkan membuat salinan untuk tujuan pengajian sahaja.
3. Perpustakaan dibenarkan membuat salinan laporan ini sebagai bahan pertukaran antara
institusi pengajian tinggi.
4. Sila tandakan ( √ ) :
SULIT* *(Mengandungi maklumat yang berdarjah keselamatan atau kepentingan Malaysia seperti yang termaktub di dalam AKTA RAHSIA RASMI 1972)
TERHAD** **(Mengandungi maklumat terhad yang telah ditentukan oleh organisasi/badan di mana penyelidikan dijalankan)
TIDAK TERHAD
Disahkan oleh:
__________________________ ___________________________________
(TANDATANGAN PENULIS) (COP DAN TANDATANGAN PENYELIA)
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“I hereby declare that this report is the result of my own work except for quotes as cited in the
references.”
Signature : ……………………
Author : TAN CHEE CHIAN
Date : ……………………
iv
“I hereby declare that I have read this report and in my opinion this report is sufficient in terms
of the scope and quality for the award of Bachelor of Electronic Engineering (Industrial
Electronics) With Honours.”
Signature : ……………………………………...
Supervisor’s Name : ENGR. AFIFAH MAHERAN BT ABDUL HAMID
Date : ……………………………………...
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Thank to my beloved father, mother and friends. Also thank to my supervisor of Final Year Project, Engr. Afifah Maheran Binti Abdul Hamid.
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ACKNOWLEDGEMENT
First and foremost, I would like to express sincere gratitude and appreciation to
all people who have been give the support and suggestion to me along my PSM I and
PSM II. I am very indebted to my PSM supervisor, Puan Afifah Maheran Binti Abdul
Hamid for her guidance, support and especially her flexibility that she has given to me in
order to complete my project and for time to time will be a meaningful memory and
lesson for me for the future and my journey in this life. Sincere appreciation also to
UTeM staff especially the FKEKK Technicians for their help related to my project.
Besides I also thanks to my family and friends who have given me moral support
in order to go through all the hard work and also for my mom and dad blessing upon me.
Therefore, I end this acknowledgement with THANK YOU VERY MUCH in
their reminiscence.
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ABSTRACT
This project is to design a charger that able to implement into shoe in order to
generate electricity to charge gadget during walking. For this project I was mainly focus
on design a shoes charger for cell phone. This project will use a DC motor for generate
electricity for charging cell phone during walking. This motor will act as a generator or
power source of this smart shoes charger. The purpose of developing this project is to
solve the problems of time consume for waiting cell phone fully charge. Besides this
project design also can convert our wasted energy during walking into a usable electrical
energy. From the result the generator will produce about 2-4 V DC voltage from the
walking action. Due to this output voltage is no achieve the desired voltage of charging.
So a DC/DC boost converter circuit will be design to increase the output voltage to the
desired charging level.
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ABSTRAK
Projek ini bertujuan mereka bentuk satu pengecas yang boleh diletakkan dalam
kasut dan boleh menghasilkan elektrik untuk mengecas peranti atau alat elektronik pada
masa berjalan. Pada projek ini saya adalah focus terhadap mereka bentuk satu pengecas
yang boleh digunakan untuk mengecas telefon bibit semasa berjalan. Dalam projek ini,
“DC motor” akan berfungsi sebagai penjana. Tujuan mereka bentuk projek ini ialah
untuk menyelesaikan masalah yang dihadapi oleh pengguna iaitu menghabiskan masa
untuk menunggu telefon bibit penuh cas. Selain itu, reka bentuk projek ini boleh
menukar tenaga yang kita gunakan semasa berjalan kepada tenaga yang berguna (tenaga
elektrik). Daripada keputusan yang saya dapat daripada praktikal, “DC motor” akan
menghasilkan 2-4V apabila kita berjalan. Kuasa dihasilkan ini tidak dapat digunakan
untuk mengecas telefon bibit maka satu litar “DC/DC boost convertor” dihasilkan untuk
menaikan voltan.
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TABLE OF CONTENT
CHAPTER TITLE PAGE
PROJECT TITLE i
DECLARATION ii
DEDICATION iii
ACKNOWLEDGEMENT vi
ABSTRACT vii
ABSTRAK viii TABLE OF CONTENT ix LIST OF FIGURES xii
LIST OF TABLES xiv
LIST OF DIAGRAMS xv LIST OF ABBREVIATIONS xvi LIST OF APPENDICES xvii
I INTRODUCTION
1.1 Project Background 1
1.2 Objectives 2
1.3 Problem Statements 3
1.4 Work Scope 4
1.5 Advantages Of The Project 5
1.6 Overview of the Report 7
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II LITERATURE REVIEW
2.1 Concept 8
2.2. Overview of dc motor & dc generator 11
2.3 Types of gear 14
2.4 Capacitor 15
2.4.1 Polarized capacitor 16
2.4.1.1 Electrolytic Capacitors 16
2.4.1.2 Tantalum Bead Capacitors 16
2.4.2 Unpolarised capacitors 17
2.5 Switching regulator 17
2.6 Boost regulator IC 20
2.7 Standard Charger 21
2.8 Shoes 22
III Methodology of Project
3.1 Introduction 23
3.2 Project planning 25
3.3 System Process 26
3.4 Circuit Development 26
3.4.1 Small generator 27
3.4.2 Gear 28
3.4.3 Boost voltage regulator circuit 29
3.5 Printed Circuit Board 32
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IV RESULT & ANALYSIS
4.1 Analysis Output Result from Generator 33
4.2 Boost Converter Circuit Analysis 35
4.3 Prototype Analysis 37
4.3.1 Prototype before implement into shoe 37
4.3.2 Prototype after implement into shoe 38
4.4 Performance analysis 39
4.4 Prototype 41
V DISCUSSION
5.1 Discussion 42
VI CONCLUSION & RECOMMENDATION
6.1 Conclusion 45
6.2 Recommendation 46
REFERENCES 48
APPENDICES 49
xii
LIST OF FIGURES
NO. TITLE PAGE
2.1 Explanation of Faraday's law and it equation 9
2.2 Current produce based on Len's law 10
2.3 Rotary Power Generation in Heel 10
2.4 Four Pole DC Motor or Generator 11
2.5 (a) Coil at θ=0o 12
2.5 (b) Coil at 0o<θ<90o 12
2.5 (c) Coil at θ=90o 12
2.5 (d) Coil at 90o<θ<180o 12
2.5 ( e) Coil at θ=180o 13
2.5 ( f) Coil at 180o<θ<270o 13
2.6 Generated current 13
2.7 Generated current outputs with split ring and structure of split ring 14
2. 8 Photo of polarized capacitor and it circuit symbol 16
2.9 Tantalum bead capacitors 17
2.10 Photo of unpolarized capacitor and it circuit symbol 17
2.11 Buck converter 18
2.12 Boost conveter 18
2.13 Waveforms of boost converter 18
2.14 Buck-boost converter 19
2.15 Cuk converter 19
2.16 USB Travels Charger 21
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2.17 Conventional charger 21
2.18 Concept of shoes charger 22
3.1 Small generator 27
3.2 The design of small generator connected with gearbox 27
3.3 Spur gear and face gear used in the project 28
3.4 Boost voltage regulator circuit 29
3.5 Internal Construction of IC MAX 756 30
3.6 PCB circuit design for this project 32
3.7 Bottom side of PCB design 32
4.1 The output voltage of generator measured by using oscilloscope 33
4.2 Waveform produced by generator before implement into shoes 34
4.3 Frequency of Output Waveform 34
4.4 Boost Converter Circuit 35
4.5 Output Voltage of Boost Converter Circuit for various Input Voltage 36
4.6 Output voltage produced measured by using oscilloscope 37
4.7 Output waveform after generator connect to boost converter circuit 37
4.8 Output voltage produced measured by using oscilloscope 38
4.9 Output waveform after generator connect to boost converter circuit 38
4.10 Current store in battery cell of phone against number of step 39
4.11 Side view of final prototype after implement into shoe 41
4.12 Charging cell phone by using this project design 41
xiv
LIST OF TABLES
NO. TITLE PAGE
2.1 Description of each common type of gear 15
2.2 Specification of each type of boost regulator IC 20
3.1 Gear ratio for each Gear 28
3.2 Pin Description of IC MAX 756 31
4.1 Output Voltage of Boost Converter Analysis 35
4.2 Charging performance of generator 39
4.3 Comparison of charging rate 40
4.4 Weight of part involve in project 41
xv
LIST OF DIAGRAMS
NO. TITLE PAGE
3.1 Methodology of the project 25
3.2 Block Diagram of Process 26
3.3 Circuit Block Diagram 26
xvi
LIST OF ABBERVIATIONS
AC - Alternating Current
BJT - Bipolar Junction Transistor
DC - Direct Current
EMF - Electromagnet motif force
IC - Integrated Circuit
IGBT - Insulated Gate Bipolar Transistor
MOSFET - Metal–Oxide–Semiconductor Field-Effect Transistor
PCB - Printed Circuit Board
PTZ -Piezoelectric Lead Zirconate Titanate
SMT -Surface Mount Technology
THUNDERTM -Thin Layer Composite Unimorph Ferroelectric Drive and Sensor
xvii
LIST OF APPENDICES
NO. TITLE PAGE
A Specification and Description of MAX 756 49
B Specification and Description of 18R223C 52
1
CHAPTER I
INTRODUCTION
This Chapter 1 is contains about the introduction of the project where it involve
of objectives, problem statements, scope, methodology, and report structure.
1.1 Project Background
Nowadays our lives are more depend on technology, so electronic device become
more and more important. People reliance upon electronic devices has risen significantly
and most people demands for decreased size and enhanced capabilities for new ways to
supply electric energy to these devices. As we know most of the electricity supply is
generated by using petrol. Since the petrol will be finish at the future, so we need find
out the new way to generate electric energy.
2
Everyday people are always rushing in doing jobs or works. Therefore, they will
have less time to spend on waiting to charge their gadget. So most of people desire have
a movable charger that can charge the electronic device even we carry the gadget device
around doing job. Besides, people also can charge their gadget (cell phone) for make an
emergency call even cell phone is out of power.
Traditionally, batteries have been sufficient to charge the electronic device, but
this solution will become less practical and inefficient as demands evolve. Further,
normal batteries have a limited lifetime, and their frequent replacement can be costly to
anyone. Therefore, this project is one of the solutions for the problem of spending time
waiting to charge the electronic device.
This project is to study and design a smart shoes charger that can generates
electricity to charge gadget while moving. The idea of this project is using motor act as
generator generate electricity during walking. As we know every day we consume a lot
of energy during walking. So this project is to design shoes that can convert kinetic
energy into a usable energy for charging gadget devices. This project is based on energy
harvesting and electromagnetic concept.
As a result, users are able to charge their gadget while walking or running with
the charger in their shoes and continue their daily activities without worrying their
gadget will be out of power. Users do not need to spend time charging their gadget.
1.2 Objectives
The objectives of this project are:
i. To do study and research on how the DC motor can act as a generator to generate
electricity.
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ii. To design the power generation part.
iii. To design a suitable circuit that convert the output of DC motor to meet the
requirement to charge electronic gadgets.
iv. To implement the product design into shoe and it able use for charging cell
phone during walking.
1.3 Problem Statements
Nowadays people always rush in doing job and everyday a lot of thing should be
we do and solve. So we can hear a lot of people say that “no enough time”.
Unfortunately time never stop for waiting us, so we need find out the way to save time.
Recently electronic gadgets play a very important role in our daily life. Normally the
charger is provided by the gadget’s manufacturer, user need connect the charger to
power supply. User need spend a lot of time for wait the gadget to be fully charged.
Besides the electricity power supply is generate by using oil, charcoal and many
more natural resources which cause the pollution to the environment. So, charging
device will increase the usage of electricity, thus indirectly increase the pollution to the
environment. Besides these natural resource will be finish at the future. So a renewable
energy is needed to fulfill our demand at the future. Therefore an environment friendly
charger is needed to reduce the environment pollution.
Furthermore, conventional charger cannot give the mobility to the users when
charging their electronic device. Therefore user cannot go anywhere to do other work
and need waiting until the electronic device fully charged.
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1.4 Work Scope
The work scopes of this project include the study and research on how to design
shoes that can act as a charger during walking. The research on the way to generate
electricity during walking is very important to make sure this project can be success. The
study and research are focus on the energy harvesting concept. Actually a lot of method
can be used to generate electricity such as by using sunlight, thermal energy, piezo effect
and electromagnetic field. In order to find out the most suitable method to generate
electricity during walking, the aspect of size of element, durability, power produced by
that element should be considered.
After the study and research have been carried out, the dc motor was choose as
the generate electricity element for this project. In this project the motor will be act as a
generator. The motor will be tested to observe the real performance and the output
generates in working condition. Normally the output voltage for charging should be 5V.
In order to achieve the desire output, a DC/DC boost converter and filter circuits should
be designed.
The design of boost converter is base on the output voltage of dc motor and
desired output voltage for charging. After that the simulation on the circuits will be
carried out. In the dc/dc boost converter circuit a boost voltage circuit will be used. A lot
of literature review on the characteristic of IC should be done and then choose the most
suitable IC that can satisfy the project requirement. After that the circuit will be test on
the breadboard. If there is any did not meet the requirement desired, adjustment will be
made.
The last work scope is, hopefully to produce the final product. The circuit and the
dc motor need to be implemented correctly in shoes to make sure that the dc motor and
circuit can be functional and the users can use the shoes as comfortable as it can. The
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safety of the product also will be observed and tested under all condition to ensure the
project meet all the safety requirements.
1.5 Advantages of the Project
i. Save time consume
Users can charge their gadget while doing daily activities such as moving, like walking
or running. As we know, today’s life is getting busy as time flies. Therefore the people
should optimize their time wisely. Besides, electronic gadgets play a very important role
in completing or doing daily activities. Currently, the charger provided by gadget’s
manufacturer, users need to connect the charger to the power supply. User has to wait
for their gadget to be charged. As a result, users will waste a lot of time waiting for their
gadget. This project is a solution to avoid the problem of running out of power of their
gadget of to this where users can charge their electronic gadget while moving.
ii. Save the environment
This project is to develop a charger that can generate its own electricity using
electromagnetism concept (will be discuss later). It can be categorized as a renewable
energy which means energy that naturally replenish. The normal charger uses the power
source that supplied by electric provider and almost all electric providers generate
electricity from oil, charcoal and many more natural resources. So this project can be say
that environment friendly because it not causes the pollution.
iii. Easy to use
This project is designed to be easy to use by all level of citizens. The small generator
(DC motor) and the circuit will be designed to suit the shoes design. Users only need to
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wear the shoes and connect the device to their gadget. Small generator and the circuit
implemented in the shoes will be placed carefully and maintain the comfort ability of the
shoes.
iv. Economical
Due to this device generates its own electricity to charge gadget by applying mechanical
force on it, users do not have to pay for electrical usage, unlike the normal charger using
power supply. So, it can save a lot of money and users can still charge their gadget.
v. Healthy lifestyle
This project also can promote a healthy lifestyle as it need mechanical force. In other
words, body movement like walking or running is useful for it to be functional. Users
can do daily exercise like jogging, running and playing games and at the same time
charging their electronic device.
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1.6 Overview of the Report
This report can be divided into five chapters. Below is brief explanation of each
chapter.
Chapter 1- Briefly discusses about the introduction of the project. This chapter covers
objectives, problem statement, work scopes, and advantages of this
project.
Chapter 2 - Covers the literature review and theoretical aspect of this project. This
chapter is an important part of the project in which it discusses the
concept used and also about the small generator (DC motor) as the main
element of the project. All the aspects needed to be considered such as
type, specification, output power of the small generator are covered in
this chapter.
Chapter 3 -Covers the methodology used in this research and development. The small
generator hardware research is discussed as well as the construction and
fabrication of the circuit that will be used in this project. For the
simulation, the circuit is tested using engineering software.
Chapter 4 - Discusses the analysis and results. The result will determine whether the
small generator that is being tested is compatible and suitable for
this project.
Chapter 5 - Summarizes and discusses the overall status of the research of the project
and also the discussion about it. Future recommendations and suggestions
for this project also included in this chapter.